The spelling of the word "gladchuk" can be explained through the use of the International Phonetic Alphabet (IPA). It is pronounced as /ˈɡlæd.tʃʌk/, with a "gl" sound at the beginning, followed by a short "a" sound and the "d" sound pronounced with the tongue touching the alveolar ridge behind the upper teeth. The "ch" sound is produced with the tongue touching the hard palate, and the word ends with the "uk" sound pronounced with rounded lips. Overall, the spelling of "gladchuk" accurately reflects its pronunciation using the IPA.